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www.blastrac.com 1-800-256-3440
OPERATION MANUAL BGS-250 V2-115V
VERSION 1.2
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1.
Contents
1.
Contents .............................................................................................................................................. 2
1.
Introduction .......................................................................................................................................... 3
2.
Machine description ............................................................................................................................. 3
3.
Safety .................................................................................................................................................. 4
3.1
Work area safety ....................................................................................................................... 4
3.2
Electrical safety ......................................................................................................................... 4
3.3
Personal safety .......................................................................................................................... 5
3.4
Machine safety general ............................................................................................................... 5
3.5
Grinding safety .......................................................................................................................... 5
3.6
Dust collector safety ................................................................................................................... 6
3.7
Asbestos safety ......................................................................................................................... 6
3.8
Maintenance safety .................................................................................................................... 7
3.9
Transport safety ........................................................................................................................ 7
3.10
Signs on the machine ................................................................................................................. 9
4.
Initial operation .................................................................................................................................. 10
4.1
Checkpoints power supply ......................................................................................................... 10
4.2
Checkpoints of machine ............................................................................................................ 10
4.3
Checkpoints of work area .......................................................................................................... 10
4.4
Manual moving of the machine .................................................................................................. 10
4.5
Changing the diamond disc........................................................................................................ 11
5.
Operating .......................................................................................................................................... 12
5.1
Before switch on ...................................................................................................................... 12
5.2
Switch on the machine ............................................................................................................. 12
5.3
Switch off the machine ............................................................................................................. 12
5.4
Operating during grinding ......................................................................................................... 13
6.
Maintenance ...................................................................................................................................... 14
6.1
Replacing the flexible coupling: .................................................................................................. 15
6.2
Other maintenance................................................................................................................... 16
7.
Troubleshooting ................................................................................................................................. 17
8.
Technical data ................................................................................................................................... 18
3
1.
Introduction
Before use, operators must be provided with information, instruction and training for the use of the machine
and the substances for which it is to be used, including the safe method of removal and disposal of the
material collected. All persons who are working with or maintaining this machine must read the manual
carefully and understand it fully. In case you sell the unit, hand it on to the next owner.
Keep this manual always with the machine, to enable it to be referred to at any time.
Any other work not covered by this operating manual must not be carried out.
This machine is designed for industrial use by professionals. Only authorized and trained personnel may
o p e r a t e
this machine. This machine is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge. Blastrac BV offers a course on
the use of the machine to make the operating and maintenance personnel familiar with all elements of
the
machine.
2.
Machine description
The BGS-250 is an electric driven floor grinding machine for treating horizontal surfaces. The machine has a
rotating adapter plate where the diamond or multifluid disc can be fixed on.
The rotating parts are covered by a sliding protection cap with a connection for a dust hose.
The machine may not be used without an adequate dust extraction system. A specially designed Blastrac dust
collection system ensures dust-free operation of the machine and clean air at the workspace.
Application
The BGS-250 can be used on almost any floor to plane, to make ready for coatings, or to remove coatings or
glue residues. This machine may not be used on wood.
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Handgrip
2
On/Off emergency switch
3
Banning tool
4
Dust hose connection
5
Driving motor
6
Lifting handle
7
Flexible coupling
8
Coupling
9
Adapter plate
10
Cutter plate / Diamond plate
4
3.
Safety
Warning!
Read all safety warnings and all instructions. Failure to follow the warnings and
instructions may result in electric shock, fire, explosions and / or serious injuries.
Only authorized and trained personnel may operate this machine. This machine is not intended for use by
persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and
knowledge.
In case of any inappropriate usage, improper operation or repair, the producer shall be exempt from liability.
3.1
Work area safety
a)
Do not use the machine in rain, damp or wet locations.
b)
Avoid dangerous environments: do not work in the presence of explosive atmospheres, in the presence of
flammable liquids, gases or dust. Remove materials or debris that may be ignited by sparks.
c) In some cases sparks could be created by grinding.
d) The surface to be treated must be clean, make sure to remove all stones, screws etc..
Any stones, screws, bolts, pieces of wire etc. could cause serious damage to the machine if it gets inside
the machine!
e)
Make sure there is enough ambient light on the work area. Cluttered or dark areas invite accidents.
f)
Keep children and bystanders away while operating the machine. They are likely not to foresee the
potential dangers of the machine. Distractions could cause you to lose control of the machine.
g)
Persons who are not operating the machine must not be permitted to stay in the surrounding area of at
least 5 meters from the machine.
h)
Never use the machine when the surface is not clear and if there is a risk of stumbling or tripping.
i)
Remove electrical cables and dust hose(s) from the surface to be treated.
j)
Make sure that there are no cables or hoses in the driving direction of the machine.
k)
Make sure that there is nothing standing or situated on the surface to be treated.
l) Never stay in the rain with the machine.
m)
Check if there are any obstacles that can snag the cables when the machine is moving.
n)
Remove all objects from the surface that can damage the machine. Remove reinforcing steel or other
objects protruding from the surface to prevent damage to the compounds or diamond discs.
o) Warning! Make sure that the surface to be treated does not contain dangerous materials such
as:
- combustible or explosive dusts
or substances.
- carcinogenic or pathogenic substances. (Except for the Asbestos version.)
p)
It is necessary to provide for an adequate air change rate L in the room if the exhaust air is returned to
the room. Comply with the National regulations.
q)
Secure the work area around the machine in public areas providing an adequate safety distance from the
machine. Use a red and white safety chain and danger sign to enclose the work area.
3.2
Electrical safety
a)
Use only extension cables for extending the main cable that are sized and marked in accordance with the
overall power consumption of the machine. Do not use damaged extension cables.
b)
Electrical cables must be rolled entirely off the reels.
c)
Any damage to the electric cables and/or electrical components is not permitted.
d)
The voltage on the identification plate must comply with the power supply.
e)
Use an electrical power supply connection with earth connection and earth leakage circuit breaker.
f)
The circuit breaker of the power supply must have a ‘’D’’ characteristic. Circuit breakers with a “C” or “B”
characteristic can give problems when switching the machine on.
g)
Keep the machine original; The machine is always equipped with an earthed connection, do not
change this and always use earthed cables with an earthed plug.
h)
Inspect and test the electrical components regularly. The electrical components must satisfy with the
requirements set out in the harmonized norm EN60204-1.
i)
Always call a skilled electrician or your distributor when you have questions about the safety of the
electrical components.
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j)
Work on electrical equipment or operating materials may only be undertaken by a skilled electrician or by
trained persons under the guidance and supervision of a skilled electrician as well as in accordance with
the electrical engineering regulations.
k)
Always use tools that are insulated against voltages.
l)
Do not abuse the cables. Never use the cables for carrying, pulling or unplugging the machine. Keep
cables away from heat, oil, sharp edges or moving parts. Damaged or entangled cables increase the risk
of electric shock. Do not fold the cable or clamp it.
m)
Don’t pull out the power supply cable out by the wire, but by the connector.
n)
Be careful with water on the treated surface. Electrical cables must not meet water.
o)
During a long standstill of the machine, pull out the main plug.
p)
If the machine is to be operated using power from a generator, the generator must be operated in
accordance with the current legal regulations and directives in force. (this applies to the protective earth
conductor in particular) to ensure that all safety devices are functioning and to eliminate possible
damage to electrical components.
3.3
Personal safety
a)
Always wear Personal Protective Equipment while working with the machine.
-Dust mask class FFP3 or higher
-Ear protection
-Safety glasses with lateral protection
-Protecting gloves
-Safety shoes
b)
Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves away from
moving parts.
c)
Personnel must tie back long hair and not wear loose clothing or jewelry including rings.
d)
Stay alert, watch what you are doing and use common sense when operating the machine.
e)
Always seek professional medical attention immediately in case of injury.
f)
All persons surrounding the machine should wear Personal Protective Equipment.
3.4
Machine safety general
a)
Safety functions and operating functions must work correct.
b)
No loose bolts and nuts permitted.
c)
Never operate machine without the guards and/or safety devices in place.
d)
Never change anything on the safety devices on the machine!
e)
Do not use the machine when it is damaged.
f)
Do not open or remove protective guards while driving gears are running.
g)
The machine, specially the handle grips must be dry and free of fats/oils.
h)
All repair work must be done by qualified Blastrac personnel, this guarantees a safe and reliable
machine.
i)
Always use original Blastrac spare parts, grinding disks and polishing pads. This will ensure the
best performance.
Only original parts meet the factory specifications and quality. Otherwise Blastrac BV cannot guarantee
the safety of the machine.
The part numbers can be found in the Service Manual.
j)
Check the rotating direction of the motor before operation. The correct direction is given with an arrow on
the housing of the motor.
k)
If safety-critical changes occur to the machine or its working method, the machine must be shut down
immediately! The cause of the fault must be established, and rectified.
l)
In the event of operational malfunctions the machine must be shut down immediately and secured!
m)
Never use the machine without a suitable (Blastrac) dust collector!
3.5
Grinding safety
a)
The machine contains rotating parts, which are protected with a sliding cover. Always leave the diamond
disc on the floor while the motor is turning.
b)
The flexible coupling can become worn out with use, because of this there can be higher vibrations
abnormal. Check for this reason the flexible coupling for deformation and damage before every use.
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c)
Do not let the machine rest on the diamond disc or coupling when it is not in use, this will cause
deformation to the flexible coupling.
d)
Make sure the diamond disc is not damaged or worn out.
e)
Always pull out the main plug before u start changing the grinding disks or polishing pads.
f)
When mounting or removing a diamond disc; lay down the machine so it is lying on the handle. Make sure
the machine will not fall back down. A second person can hold the handle down, to make sure it will not
fall
back down.
g)
When changing the disks u should wear Personal Protective Equipment like a dust mask, safety goggles,
gloves, protective shoes, and close fitting protective clothing.
Use the vacuum cleaner while changing the discs to prevent excessive dust.
h) Caution! The grinding disc will heat up during grinding, don’t risk getting burned, always wear
protective gloves when handling them!
i) The machine contains rotating parts; because of this never pull the machine backwards with a turning
motor.
j) Be careful with the machine and pull or let down the machine slowly, big shocks can damage the electrical
parts.
3.6
Dust collector safety
a)
Always use a Blastrac dust collector to ensure a dust-free operation of the machine and clean air at the
workspace. Also, the airflow helps to cool the machine and prevents overheating.
b)
When working on or around carcinogenic or pathogenic substances, the dust collector must be fitted
with a HEPA filter.
c)
Read the operating instructions of the dust collector before using it.
d)
The dust container/bag of the dust collector must be emptied regularly. Comply with the local waste
treatment regulations considering the removed material.
e)
The dust hose must be connected properly with a hose clamp and industrial tape.
f)
The dust hose must be undamaged and free of obstructions.
g)
Always switch on the dust collector first!
3.7
Asbestos safety
a)
Always check and comply with the local authorities and regulations!
b)
Employees that are responsible for the execution of the asbestos removal must be trained and certified
accordingly.
c)
Operators and other third parties that are involved in asbestos removal and in that context, are present
in
the work area must have sufficient knowledge of the risks with respect to asbestos.
d)
Such persons must (according to the labor regulations) proven to be instructed (information and
education) about the health risks of working with (or at) asbestos (removal) and the measures for
personal protection about possible exposure to asbestos.
e)
The operator must know the usual procedures when leaving the working area, including the visual
inspection in cleaning of the machine being used.
f)
The operator must use respiratory protection which is sufficient for work with asbestos, and must have
knowledge of the correct HEPA filters that are to be used.
g)
If there is a possibility that asbestos fibers are released, they shall be collected at the exit or point of
origin and then be disposed of without risk to human and environment according to the local regulations.
h)
If it is not possible to completely collect the contaminants, additional ventilation and filtration measures
must be taken.
i)
At the end of work the complete machine including the dust collector, tools, work equipment and the work
area must be carefully cleaned according to local regulations.
j)
Objects contaminated with asbestos fibers that cannot be cleaned must be moistened and eliminated
properly. After cleaning the work area must be adequately ventilated.
k)
Extracted air must be guided and cleaned so that asbestos fibers are not released into the breathing air of
other employees.
l)
The dust produced and collected must be transported in dustproof containers. Decanting is not permitted.
m)
The extracted air which is released back into the outside air may not exceed a fiber content of 1000 F/m³.
n)
The dust collector must be a type-approved industrial vacuum cleaner or dust collector with HEPA filter
and meet this criterion.
o)
It must be ensured that the working area is supplied with sufficient outdoor air (fresh air).
p)
For activities involving materials containing asbestos, a recirculation of purified air in the work area are
not allowed. The following activities with the industrial vacuum cleaner or dust collector recirculation of
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purified air is permitted: 1: Activities involving low exposure according to TRGS 519, Number 2.8
confined spaces or small-scale work to TRGS 519, Section 2.10, and 2: cleaning.
q)
the outside of the machine should be decontaminated by cleaning and vacuuming methods, de-dusted
before being taken out from the hazardous zone. All parts of the machine must be considered as
contaminated when they are removed from the hazardous zone and appropriate actions must be taken to
prevent dust from dispersing.
r)
The machine is to be serviced and cleaned, as often as is required, but at least once a year, and if
necessary, repaired by a competent person (see qualification TRGS 519, Number 5.3, paragraph 2) and
checked by a maintenance company. The test result must be provided on request.
s)
The machine and dust collector used in the black area may only operate in the white area after complete
cleaning, including the motor housing. For engines with bypass cooling the cooling air ducts must be
clean.
t)
When maintenance or repair procedures are carried out, all the contaminated elements that cannot be
properly cleaned, must be destroyed.
u)
These elements must be disposed of in sealed bags according to the applicable regulations and in
accordance with the local laws governing the disposal of such material. This procedure must also be
followed when the filter must be disposed.
3.8
Maintenance safety
a)
Pull out the main plug before starting inspections and repairing on the machine.
b)
Wait for standstill of all drives before any inspections, adjustments and/or maintenance work is started.
c)
Block machine in stable position before doing any maintenance work.
d)
Failures due to inadequate or incorrect maintenance may generate very high repair costs and long
standstill periods of the machine. Regular maintenance therefore is imperative.
e)
Operational safety and service life of the machine depends, among other things, on proper maintenance.
f)
Prevent premature wear by keeping the machine as dust free as possible. Clean the machine for this
reason regularly with a dust collector and non-aggressive materials. Never use a high-pressure water
cleaner to clean the machine.
g)
Do not use any aggressive cleaning materials!
h)
Use lint-free cleaning cloths!
i)
It is advisable to stock all spare parts or wear parts that cannot be supplied quickly. As a rule, production
standstill periods are more expensive than the cost for the corresponding spare part.
j)
To allow the user to carry out maintenance operations, the machine must be disassembled, cleaned and
inspected as far as reasonably possible, without causing hazards for the maintenance staff or other
people.
k)
The suitable precautions include decontamination before disassembling the machine, adequate filtered
ventilation of the exhaust air from the room in which it is disassembled, cleaning of the maintenance area
and suitable personal protection equipment.
3.9
Transport safety
a)
Be aware of your surroundings and machine operating level. Do not side hill, do not run on steep incline,
this could cause machine to tip over.
b)
The net weight of the BGS-250 is 58 kg. Use a crane or lift when transporting the machine, use the lifting
eye of the machine.
c)
Before every use check the lifting eye and welds for:
deformation, damages, cracks, corrosion and wear.
d)
Hold on to the steering handle until the machine is of the ground.
e)
When lifting the machine from the ground, always use the lowest lifting speed. The cables must first be
tensioned at this speed; they must not be slack when the machine is lifted from the ground.
f)
During hoisting make sure to be at a safe distance from the machine with the most optimal view on the
machine and working environment.
g)
Never stand directly below the machine.
h)
When transporting the machine do so in such a manner that damage because of the use of force
or
incorrect loading and unloading is avoided.
i)
The lifting eye can also be used to fasten the machine on a pallet or during transport.
j)
Always drive backwards when driving up to a ramp or grade, and forwards when driving of the ramp.
k)
Chock wheels for transport.
l)
Do not let the machine rest on the diamond disc or coupling when it is not in use, this will cause
deformation to the flexible coupling.
k)
Don’t leave the machine unsecured on jobsites.
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l)
Park the machine always on a flat horizontal and levelled surface.
m)
Make sure the electrical cable and dust hose are disconnected before transport.
n)
Store the cleaned and dry machine in a humid free room. Protect the electrical motor from moisture, heat
dust and shocks.
o)
Never use the machine for lifting persons or items.
p)
It is not allowed to lift this machine with 2 persons.
Only lift the machine up by the points 1 and 2 as shown in the picture below.
Use the banning tool to loosen the nuts
to fold in the steering handle.
47”
48”
”
19”
28”
26”
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3.10
Signs on the machine
The following stickers are placed on the machine. Meanings of these symbols are:
•
! Danger Hazardous voltage in motor even when solid state controller is OFF.
Disconnect main power before servicing motor, controller or associated wiring.
•
Warning! Hot surface
Wear a dust mask class FFP3
Ear protection is obliged
Safety glasses with lateral protection are obliged
CE-mark on this machine
Wear protecting gloves
Safety shoes obliged
Consult the manual before operating the machine
Name, address, telephone & fax number,
Email address and website.
The machine types.
The net weight of the machine in kilogram.
CE mark.
The year of manufacture.
The serial number of the machine.
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4.
Initial operation
Before using the machine, it is essential to inspect the machine.
It is not permitted to use the machine if the machine safety is not according the checkpoints below.
Before switching on the machine make sure that no-one can be endangered when the machine starts up!
4.1
Checkpoints power supply
Use only extension cables for extending the main cable that are sized and marked in accordance with
the overall power consumption of the machine.
Electrical cables must be fully unwinding of them reels.
No damage is permitted for electrical cables.
Use an electrical power supply connection with earth connecting.
Make sure the power supply is in accordance with the machine specifications.
The circuit breaker of the power supply must have a ‘’D’’ characteristic. Circuit breakers with a “C” or
“B” characteristic can give problems when switching the machine on.
If the machine is to be operated using power from a generator, the generator must be operated in
accordance with the current legal regulations and directives in force. (this applies to the protective
earth conductor in particular) to ensure that all safety devices are functioning and to eliminate
possible damage to electrical components.
4.2
Checkpoints of machine
Safety functions and operating functions must work correct.
Check all screws and other fasteners for tightness. No loose bolts and/or nuts are permitted.
Check the electrical components, cables and connections for wear and/or damages.
Dust hose connections must be reliable: use hose clamps and industrial tape.
Dust hoses must be undamaged and free of obstructions.
Make sure that the dust bin / big bag of the dust collector is empty and connected properly.
The flexible coupling is not deformed or damaged.
The diamond / multifluid disc is not damaged.
4.3
Checkpoints of work area
•
Before grinding, clean the surface to be treated. There should not be any trash, stones, cloths, or oil
on the surface.
•
Remove all objects from the surface that can damage the machine. Remove reinforcing steel or other
objects protruding from the surface to prevent damage to the machine.
•
When working with the Asbestos version, check and comply with the local regulations!
4.4
Manual moving of the machine
To move the machine, press down the handgrips of the machine until the front part rises from the
ground. It can now be pushed around on its wheels.
The machine should only be moved around when the dust hose and pow er supply cable are
disconnected.
Be careful! Make sure nobodies feet get under the wheels. Wear appropriate safety shoes when you
drive the machine to or from the work area.
WARNING! Always make sure all rotating parts have come to a complete standstill before moving around the
machine.
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4.5
Changing the diamond disc
Read chapter 3 “Safety” before changing the disk.
Warning!
Always wear Personal Protective Equipment!
The dust can be hazardous to the health! Wear a dustmask!
The disk can get hot! Don’t risk burning your hands! Wear protective gloves!
•
Pull out the mains plug before you start
•
Always wear gloves and a dust mask of at least class FFP3
•
Use an extra vacuum cleaner to work as dust free as possible
Removing the diamond disc
Read chapter 3 Safety.
Make sure the machine cannot start up, unplug the power supply plug.
Lay down the machine so it is lying on the handle. Make sure the machine will not fall back down. A
second person can hold the handle down, to make sure it will not fall back down.
Block the rotation of the disc, use the special tool.
Loosen the 4 bolts with an appropriate key.
Remove the diamond or multifluid disc.
Mounting the diamond disc
Read chapter 3 Safety.
Make sure the machine cannot start up, unplug the power supply plug.
Lay down the machine so it is lying on the handle. Make sure the machine will not fall back down. A
second person can hold the handle down, to make sure it will not fall back down.
Block the rotation of the disc, use the special tool.
Fix the diamond or multifluid disc underneath the adapter plate and turn the 4 bolts with an appropriate
key tight.
Slide the special tool through the slots.
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5.
Operating
During operating the machine, the following additional safety instructions must be followed closely.
Before switching on the machine make sure that no-one can be endangered when the machine starts up.
Make sure that no vehicles, such as forklift trucks and other equipment run over the electric cable and the dust
hose.
5.1
Before switch on
Checking the turning direction of the motor
Push down on the handle of the machine so that the diamond disc is off the ground, but the protection
cap stays in contact with the floor.
•
Start the machine for a few seconds by pressing the green START-button.
•
Stop the machine by pressing the red STOP-button.
•
Check the rotating direction of the motor (the correct direction is indicated with an arrow).
The fan must turn clockwise when looking on top of the fan.
Correcting the turning direction of the motor
•
Switch off the motor.
•
Wait for a complete standstill of all drives.
•
Unplug the machine from the power supply.
•
Change the phases.
•
Reconnect the machine to the power supply and check the turning direction of the motor again.
5.2
Switch on the machine
Turn on the dust collector before switching the machine on.
Connect the dust hose with the machine, use clamps and industrial tape.
Stand behind the machine.
Push down the handle of the machine so that the diamond
disc is off the ground, but the protection cap stays in contact
with the floor.
•
Push the green button on the electrical box (1)
•
Let down the machine till the diamond disc hits the floor.
•
Start grinding.
5.3
Switch off the machine
Push the red button on the electrical box (1)
Wait until the machine stops rotating before laying down the machine on the handle.
Pull out the power supply.
Shut down the dust collector.
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5.4
Operating during grinding
To get an optimum result during grinding, the machine
may not stand still.
The machine must always be in movement so it does not
grind too deep into the floor.
Move the machine from left to right and from forward to
backwards to get a nice flat result.
Carry out grinding in parallel tracks in such way that the dust hose and electric cable do not become twisted.
The next figure shows the recommended grind paths leading away from the dust collector.
1
Dust collector
2
Dust hose and
electric cable
3
Grinding machine
The advancing speed depends on the material of the surface to be treated and the desired profiling.
Regularly check the contents of the dust collector. Always wear a dust mask of at least class FFP3 when
emptying the dust bin or changing the dust bag /big bag. Observe and obey the local waste disposal
regulations!
Make sure that no vehicles, such as forklift trucks and other equipment run over the electric cable and the dust
hose.
For soft floors it is recommended to work on high disc speed, for hard floors and the first steps of polishing it is
recommended to grind with low speed of the tools.
Contact our experts at Blastrac for the correct application of the different tools and their
corresponding working speeds.
In case of emergency or operating trouble, like vibrations or strong noises, switch the machine off immediately by hitting on the OFF-button!
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6.
Maintenance
Pay attention to Chapter 3 "Safety" during maintenance and repair works.
Failures due to inadequate or incorrect maintenance may generate very high repair costs and long standstill
periods of the machine. Regular maintenance therefore is imperative.
Operational safety and service life of the machine depends, among other things, on proper maintenance.
The following table shows recommendations about time, inspection and maintenance for the normal use of the
machine.
Operating hours/
time
Inspection points, maintenance instructions
12 h after repairing
Check all accessible screw connections for tight seat.
Every 3 hours
Check the contents of the dust collector.
Daily and prior to
starting work
Check that all safety devices working adequate.
Check the electric connections for sediments of dirt or foreign bodies.
Check the electric motors for dirt and other contaminants.
Check the function of the residual current operated device.
Check the hose connections for tightness and fixed seat.
Check all hoses on the machine for damages or leakage.
Make sure that the dust bin is emptied
Check the diamond disk and flexible coupling for damages and wear.
Check if, there are any foreign matter in the coupling of
the grinding
disc
Every 3 months
Clean the machine with a dust collector and a damp lint-free cloth.
Annually
Full overhaul and cleaning of the complete machine.
Replacement of the diff. pressure switch filter. (For BGS-250A)
The time indications are based on uninterrupted operation. When the indicated number of working hours is not
achieved during the corresponding period, the period can be extended. However, a full overhaul must be
carried out at least once a year.
Due to different working conditions it can’t be foreseen how frequently inspections for wear check’s,
inspection,
maintenance and repair works ought to be carried out. Prepare a suitable inspection schedule
considering
your own working conditions and experience.
Pay attention to unusual noises or strong vibrations. Check for the cause of every big change. Call a technician
if you have doubts about the cause or when a repair without a technician seems not possible without damages.
Only use genuine Blastrac spare parts.
Generally, the grinding machine requires very little special attention regarding its maintenance.
After using the machine, clean the machine with the dust collector, so there is no dust on or in the machine.
See to it that any wastes or fiber residues do not remain in the grinding disc.
Our specialists will be happy to assist you with more advice.
Prior to any repair works on the machine and its drives, secure the
machine against unintentional switching on. Put the machine to its
safety off position. The machine is in a safe condition when it cannot
generate any hazard.
Follow additional operating and maintenance of Original Equipment Manufacturer if included
during your service and maintenance work.
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Further is advised:
Store the cleaned and dry machine in a dry and humid free room. Protect the electrical motors from moisture,
heat, dust and shocks.
All repair work must to be done by qualified Blastrac personnel, this to guarantee a safe and reliable machine.
Any guarantee on the machine is expired when:
Non- original Blastrac parts have been used
Repair work is not done by qualified Blastrac personnel
Changes, add no’s or conversions are undertaken without written permission of Blastrac BV
Screws, bolts etc. that have been removed must be replaced with those of the same quality, strength, material
and design.
Do not weld, flame cut or perform grinding works on or near the machine. Danger of fire or explosion exists!
Provide adequate ventilation when working in a confided space.
Secure the maintenance area if necessary.
Work only with original Blastrac parts.
Check regularly to see if the diamond disc is in good condition. Replace immediately the diamond disc when
this is damaged or worn out.
Check if the flexible coupling is stiff enough, after every 2 diamond disc changes. Replace if any deformation or
damage is found, replace the coupling after use of 7 diamond discs.
Unusual vibrations on the machine check immediately the diamond disc and flexible coupling
6.1
Replacing the flexible coupling:
Pull out the main plug
Remove the diamond disc
Remove the protection cap
Loose the bolts of the adapter plate and the flexible coupling
Take a new flexible coupling and assemble this together with the adapter plate on the fixed coupling
on the motor axle
Assemble the protection cap
Prevent premature wear by keeping the machine as dust free as possible. Clean the machine for this reason
regularly with a dust collector
Clean the machine every day with air and non-aggressive materials. Never use a high-pressure water cleaner
to clean the machine.
Remove the diamond disc after using the machine.
16
6.2
Other maintenance
Check the seals for wear, and replace them at the time when they no longer provide a good seal against dust
emissions from the machine, by this action damage to the surrounding workspace is avoided, and
consequently saves additional charges from the job client.
17
7.
Troubleshooting
Fault
Possible cause
Remedy
Excessive vibration
And / or unusual noises
Imbalance due to worn or broken grinding
tools.
Defective bearing.
Debris deposit on the coupling.
Replace all worn or broken parts.
Check the bearing on the axle drive shaft
and replace if necessary.
Clean the coupling.
Reduced or no grinding
performance
Grinding tools have reached the maximum
permissible wear.
Inappropriate grinding tool for the
application.
Replace the worn parts.
Replace the grinding tools with
appropriate grinding tools for the surface
to be treated.
Motor does not switch on
Missed phase
Defective Component.
Check the mains power supply and next
switch on again.
Find fault and replace defective
component.
Motor triggers while
running
Motor protections switch triggered because
of overload.
Motor has a defect.
Reduce additional load.
Check the motor.
(For Asbestos-version)
Machine will not start;
green control light is
turned OFF
The differential pressure switch prevents
machine from starting up, because:
the connected dust collector does not have
enough suction power, or it is turned off.
The dust hose is blocked or damaged.
The measuring points are blocked.
The air hoses are blocked or twisted.
The filter is clogged.
The setpoint of the differential pressure
switch is incorrect.
Check the dust collector.
Check the dust hose and the connections.
Check the measuring point inside the
dust hose connection.
Check the measuring point at the back of
the differential pressure switch
Check the air hoses and connections.
Check and replace the filter if necessary.
Check the settings of the differential
pressure switch, must be set at -10mbar.
(For Asbestos-version)
Machine will not start;
green control light is
turned ON
The differential pressure switch is not the
problem.
Check the motor and other components.
Old equipment contains valuable materials which are valuable for re-processing. The machine parts must
not be thrown away in the normal household waste, but should be disposed of at a suitable proper
collection system, e. g. via your communal disposal location. This way the materials can be re-used in an
environmentally responsible manner.
18
8.
Technical data
BGS-250 v2 115V
MOTOR POWER CONSUMPTION
1.75 HP
DIAMOND DISC SIZE
10”
DISC SPEED
115V/15A
LENGTH (L)
28”
WIDTH (W)
19”
HEIGHT (H)
26”
MAXIMUM HEIGHT STEERING HANDLE
48”
WORKING WIDTH
10”
WEIGHT
165 LB
Design and specifications are subject to change without notice by Blastrac NA.
IMPORTANT NOTE:
The indicated values are measured on new machines. Sound and vibration levels will vary in different
circumstances. Area influences like open outside or closed inside space, ambient temperature, the surface to
be
treated, etc. will give different values at all time.
The declared vibration and sound emission levels represent the main applications of the machine. However, if
the
machine is used with different accessories or poor maintenance, the vibration and sound emissions may
differ. The
values may be used for a preliminary assessment of exposure.
For a precise estimate of the vibration and sound load, the times should also be considered during which the
machine is switched off or even running, but not actually in use. This may significantly decrease the exposure
level
over the total working period.
Despite the fact that this guide is made with care, Blastrac takes no liability for errors in the manual and the possible
consequences. We are naturally very interested in your findings and additions.
No part of this publication may be reproduced and / or published in print, photocopy, or other form without prior permission by
Blastrac
www.blastrac.com 1-800-256-3440
SERVICE MANUAL BGS-250 V2-115V
VERSION 1.2
For Serial #21804005 and Up
2
Index
1. Spare parts 03
2. Electrical 07
3. Contact 09
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